--- product_id: 576368370 title: "Britax Poplar Convertible Car Seat, Slim 17\" Design — Stone Onyx" brand: "britax" price: "$1917.02" currency: USD in_stock: true category: "Britax" url: https://www.desertcart.us/products/576368370-britax-poplar-convertible-car-seat-slim-17-design-stone-onyx store_origin: US region: United States of America --- # Slim 17" SpaceSaver design ClickTight tech for foolproof install Supports up to 65 lbs forward-facing Britax Poplar Convertible Car Seat, Slim 17" Design — Stone Onyx **Brand:** britax **Price:** $1917.02 **Availability:** ✅ In Stock ## Summary > 🚗 Sleek, safe, and space-savvy—because your little one deserves the best ride. ## Quick Answers - **What is this?** Britax Poplar Convertible Car Seat, Slim 17" Design — Stone Onyx by britax - **How much does it cost?** $1917.02 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/576368370-britax-poplar-convertible-car-seat-slim-17-design-stone-onyx) ## Best For - britax enthusiasts ## Why This Product - Trusted britax brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Custom Comfort Fit:** 14-position adjustable harness and headrest grow with your child for a perfect, secure fit. - • **Space-Smart Design:** Slim 17-inch width fits 3-across in many vehicles, maximizing family travel without sacrificing comfort. - • **Effortless Installation:** ClickTight system guarantees a secure, stress-free setup every time—no guesswork needed. - • **Premium Safety Engineering:** Steel frame, SafeCell® crumple zone, and patented V-shaped tether absorb crash energy for peace of mind. - • **Extended Rear-Facing Safety:** Rear-facing up to 50 lbs keeps your child safer longer, aligning with top safety recommendations. ## Overview The Britax Poplar Convertible Car Seat in Stone Onyx combines advanced ClickTight installation technology with a slim 17-inch SpaceSaver design, allowing for easy 3-across seating in many vehicles. It supports rear-facing use up to 50 lbs and forward-facing up to 65 lbs, featuring a 14-position adjustable harness and headrest for growing children. Engineered with a steel frame, SafeCell® crumple zone, and patented V-shaped tether, it delivers top-tier safety while offering premium comfort and easy cleaning with machine-washable covers and dishwasher-safe cup holders. ## Description Ready to go with room to grow! The Britax Poplar™ convertible car seat takes the stress out of moving to the next car seat stage thanks to the patented ClickTight® installation and slim SpaceSaver™ design. This convertible car seat accommodates up to 50 lbs when installed rear-facing, allowing your child to ride rear-facing longer. It easily switches to a forward-facing car seat as your child grows, accommodating up to 65 lbs. ClickTight technology provides fully open seat belt paths that are clearly labeled and easy to access, and the automatic tensioner takes care of the tightening. The baby car seat lets you easily adjust the 14-position harness and headrest to help create your child’s perfect fit. The car seat features 17-inch SpaceSaver technology designed to fit 3-across* without compromising on trusted Britax safety and premium comfort. The Britax car seat includes a patented SafeCell® crumple zone and V-shaped top tether to help manage crash energy. Carbon steel reinforced frame and belt paths provide strength and stability. *Britax cannot guarantee 3-across installation fitment in all vehicles ## Features - 2-in-1 Convertible Car Seat: The Britax Poplar fits rear-facing up to 50 lbs while easily switching to forward-facing as your child grows - Install with Confidence, Every Time: With ClickTight technology, there’s no guessing or stressing. Fully open seat belt paths are clearly labeled and easy to access; open, thread and buckle, click it closed - SpaceSaver Design: Slim 17" seat is designed to fit 3-across* in certain vehicles without compromising on trusted Britax safety and premium comfort. *Britax cannot guarantee 3-across installation fitment in all vehicles - Room to Grow: 14-position harness and headrest adjust together easily to help create the perfect fit - Britax Safety: The steel frame and crumple zone help absorb crash energy and a patented V-shaped tether helps slow forward movement - Flip-Forward Buckle Pad: Stays out of the way for easy boarding in the toddler seat - Naturally Flame-Retardant: The car seat cover is made of naturally flame-retardant fabric with no added FR chemicals - Simple Cleaning: Washer and dryer friendly cover and 2 dishwasher-safe cup holders ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BWH3846V | | Age Range Description | Newborn to Toddler | | Best Sellers Rank | #21,450 in Baby ( See Top 100 in Baby ) #59 in Convertible Child Safety Car Seats | | Brand | Britax | | Color | Stone Onyx | | Customer Reviews | 4.7 out of 5 stars 382 Reviews | | Forward Facing Maximum Weight | 65 pounds | | Forward Facing Minimum Weight | 22 pounds | | Global Trade Identification Number | 00652182743055 | | Harness Type | 5-Point | | Installation Type | Latch | | Item Dimensions D x W x H | 20.5"D x 17"W x 23.5"H | | Item Highlight | 2-in-1 Car Seat, Extended Rear Facing Up to 50 lbs; Slim Car Seat, Easy Installation With ClickTight, SafeWash Fabrics | | Item Type Name | Car Seats | | Item Weight | 27.2 pounds | | Manufacturer | Britax USA | | Manufacturer Warranty Description | 1 year manufacturer limited | | Material | Alloy Steel | | Material Type | Alloy Steel | | Maximum Height Recommended | 49 inches | | Maximum Weight Recommendation | 65 pounds | | Minimum Weight Recommendation | 5 pounds | | Model Number | E1C933M | | Number of Height Positions | 14 | | Orientation | Rear and Forward Facing | | Part Number | E1C933M | | Product Dimensions | 20.5"D x 17"W x 23.5"H | | Rear Facing Maximum Weight | 50 pounds | | Rear Facing Minimum Weight | 5 pounds | | UPC | 652182743055 | | Unit Count | 1 Count | ## Product Details - **Brand:** Britax - **Color:** Stone Onyx - **Installation Type:** Latch - **Material:** Alloy Steel - **Orientation:** Rear and Forward Facing ## Images ![Britax Poplar Convertible Car Seat, Slim 17" Design — Stone Onyx - Image 1](https://m.media-amazon.com/images/I/7126rSTOazL.jpg) ![Britax Poplar Convertible Car Seat, Slim 17" Design — Stone Onyx - Image 2](https://m.media-amazon.com/images/I/81jMw1u3m8L.jpg) ![Britax Poplar Convertible Car Seat, Slim 17" Design — Stone Onyx - Image 3](https://m.media-amazon.com/images/I/81CdEc86A1L.jpg) ![Britax Poplar Convertible Car Seat, Slim 17" Design — Stone Onyx - Image 4](https://m.media-amazon.com/images/I/810L5kTNVRL.jpg) ![Britax Poplar Convertible Car Seat, Slim 17" Design — Stone Onyx - Image 5](https://m.media-amazon.com/images/I/81mX2+VVYSL.jpg) ## Available Options This product comes in different **Color** options. ## Frequently Bought Together - Britax Poplar Convertible Car Seat, 2-in-1 Car Seat with Slim 17-Inch Design, ClickTight Technology, Stone Onyx - Britax Car Seat Waterproof Liner - Moisture Wicking Fabric + No Slip Grip + Machine Washable + Crash Tested - Britax Grow with You ClickTight Harness-2-Booster Car Seat, 2-in-1 High Back Booster, Black Contour --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/576368370-britax-poplar-convertible-car-seat-slim-17-design-stone-onyx](https://www.desertcart.us/products/576368370-britax-poplar-convertible-car-seat-slim-17-design-stone-onyx) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-22*